Tympan-bale.



PATENTED OUT. 15, 1907.

J. 0. A. ANDERSON.

TYMPAN BALE.

APPLICATION FILED JAN. 14, 1907 I MIA 5555.-

H W mm INVENTOR.

THE NORRIS PETERS co-, wasumaron, n c.

other ready for application.

PATENT oEEIoE.

JOHN G. A. ANDERSON, OF CHICAGO, ILLINOIS.

TYMPAN-BALE.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application filed January 14,1907. Serial No. 352,321.

To all whom it may concern:

Be it known that I, JOHN C. A. ANDERSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Tympan-Bales, of whichthe following is a full, clear, concise, and exact description referencebeing had to the accompanying drawings, forming a part of thisspecification.

My invention relates to tympan bales or bands and has for its object theprovision of an improved means for fastening the bale or band to theplaten when used for printing purposes.

Generally speaking my invention provides apparatus whereby cushion paperof different thicknesses may be placed on said platen and securely heldin place by my improved bands without the use of any tools, the meansfor holding being automatically adjusting in their character.

I will describe my invention more in detail by reference to theaccompanying drawing illustrating one embodiment thereof in which Figure1, represents a top view of the platen with one of my improved adjustingbale bands in place and the Fig. 2, illustrates a broken side view moreclearly to show features of construction. Fig. 3, represents a completeside view of the platen and bale shown in Fig. 1.

Referring to the drawing I show thebody a of the platen pivotallysupported upon the post b. This platen is used in printing presses andthe paper upon which it is desired to print is laid on the platen andthe entire platen then moved against the type, or vice versa.

It is not advisable to lay the paper which is to be printed directly onthe metal surface of the body a and therefore sheets of paper or padscalled the tympan and used for cushioning purposes are placed beneaththe paper which is to be printed on. It offers many difiiculties toplace the proper thickness of cushion paper on the body a for differentwork and hold it securely in place by the present devices as used in theart.

By virtue of my improved device any thickness of paper can bepermanently or removably mounted on the platen and held in place withthe least expenditure of work and the articles to be printed can then beproperly introduced and the work properly carried on. I will describe aspecific constructional form which my invention may take.

For the purpose of providing means which permit of different thicknessesof paper being securely fastened to the body a, I use a G shaped arm orbale band which is pivotally held on the body a by means of two screws dd. The screws (1 preferably project through an elongated slot e, so thatthe bale bands 0, c besides being allowed a rotary motion are permittedto movelongitudinally of the body a. Springs f f are used to pull thebales c centrally, thus that when they are in the position shown, forinstance, at the right hand side of Fig. 3, the said bale will be drawntoward the end of the body a.

It will be seen that the strips of paper 9 can be of any thickness andplaced on the body a and by pushing the bales c c down over them, saidarms will clamp the paper in place by virtue of the tension of thesprings f f tending to draw them centrally longitudinally.

The great advantage of thus being permitted to re adjust the thicknessof the tympan paper will be at once apparent to those skilled in theart, as great saving of time results.

Having thus described the preferred embodiment of my invention what Iclaim as new and desire to secure by Letters Patent is:

In a printing press a platen consisting of a table for supportingcushioning paper, a rotatable band automatically adjustablelongitudinally of said table for holding various thicknesses of saidpaper, slots provided in said band to permit of said adjustment, and aspring for causing the automatic adjustment of said band.

In witness whereof, I hereunto subscribe my name this 29th day ofDecember A. D. 1906.

JOHN C. A. ANDERSON.

Witnesses;

PAUL H. WOODRUFF, MAX W. LABEL.

